diff --git a/Printed-Parts/scad/PSU-cover-MK3.scad b/Printed-Parts/scad/PSU-cover-MK3.scad
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+++ b/Printed-Parts/scad/PSU-cover-MK3.scad
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+// PRUSA iteration3
+// PSU Cover MK3
+// GNU GPL v3
+// Josef Průša <iam@josefprusa.cz> and contributors
+// http://www.reprap.org/wiki/Prusa_Mendel
+// http://prusamendel.org
+
+module CubeAdjust(Xdim, Zdim)
+{
+    for (x =[6:11.2:Xdim-12])
+        {
+        for (z =[6:11.2:Zdim-12])
+            {
+                translate([x,-0.2,z])cube([10,0.4,10]);
+            }
+        }
+}
+
+module nuttrap()
+{
+        rotate([0, 180, 0]) difference()
+        {
+        union()
+                { 
+                translate([-4.25,-7.5,0]) difference(){
+                translate([0,0,0]) cube([8.5, 9.2, 3]);
+                translate([-1,10.6,0]) rotate([45,0,0]) cube([11.5,5.7,5.7]);
+                }
+            }
+        translate([0,0, -0.2])rotate([0,0,30]) cylinder(r=3.5,h=15-1.5, $fn=6);
+  }
+}
+
+module m3_screw()
+{
+    translate([0,0,-0]) cylinder(r=1.5,h=12, $fn=30);
+    translate([0,0,12]) cylinder(r2=2.8, r1=1.5,h=2, $fn=30);
+    translate([0,0,14]) cylinder(r=2.8,h=5, $fn=30);
+}
+
+
+
+
+
+
+
+module PSU_COVER()
+{
+difference()
+    {
+        union()
+        {
+            translate([0,0,-0.46])cube([95,50+15,54.25]); // Base
+            translate([0,0,-3.5])cube([14-0.5,50+15,5]); // Back pillar 1
+            translate([-1.6,1,51.5])cube([5,64,3]); // Back pillar 1
+            translate([60-0.5,0,-3.5])cube([14,50+15,5]); // Back pillar 2
+            translate([91+4,0,-0.46])cube([6,50+15,54.25]); // Base for bracket
+            translate([-2,45.4-4.6,19])cube([2,3,15]); // nipple on the right
+            
+            translate([-1.6,0,0])cube([1.65,65,2]); // Frame skirt 1
+            translate([-1.6,0,0])cube([1.65,30,53.78]); // Frame skirt 2
+            translate([-1.6,0,51.32])cube([1.65,65,2.46]); // Frame skirt 3
+        }
+
+
+    //pretty corners
+    translate([-11,-2,-2])rotate([0,0,-45])cube([10,10,58]);
+    translate([95-3+5+1,-2,-2])rotate([0,0,-45])cube([10,10,58]);
+
+    translate([-3,-9,-4.46])rotate([-45,0,0])cube([130,10,10]);
+    translate([-3,-12,54.78])rotate([-45,0,0])cube([130,10,10]);
+
+    translate([-3,45+15,-4.46])rotate([-45,0,0])cube([130,10,10]);
+    translate([-3,48+15,54.78])rotate([-45,0,0])cube([130,10,10]);
+
+    translate([95-3+3,70,-2])rotate([0,0,-45])cube([10,10,58]);
+    translate([95,0-10,-20])rotate([0,-45,-45])cube([20,20,20]);
+    translate([95,0-10,45])rotate([0,-45,-45])cube([20,20,20]);
+
+    translate([95,60,-10])rotate([-35,-45,-45])cube([20,20,20]);
+    translate([95,60,65])rotate([-55,48,-48])cube([20,20,20]);
+
+    translate([79,-5,67.28])rotate([0,45,0])cube([20,90,20]);
+    translate([79,-5,-13.96])rotate([0,45,0])cube([20,90,20]);
+
+
+
+    translate([3,3,2])cube([89.02,50.02+15,50.02-0.7]); // main cutout
+    
+    translate([-3,50-16.4+15,2])cube([100,16.5,50-0.7]); // insert cutout
+    translate([-3,50-16.4-15.6+15,2])cube([10,100,17]); // right bottom cutout
+    translate([85+2,50-16.4-17.6+15+0.9,2])cube([10,100,50-0.7]); // left bottom cutout
+
+    translate([85+2,10,2])rotate([0,0,45]) cube([10*sqrt(2),10*sqrt(2),50-0.7]);
+    translate([85+2,3,2]) cube([10,17,50-0.7]);
+
+    translate([-3,50-16.4-17.6+15+0.9,2])cube([100,100,10]); //  bottom cutout
+
+    translate([5.5,0.5,0])
+    {
+        translate([48,1.5,40])cube([27.5,32.9,30]); // socket cutout
+        translate([48-4.5,3+15.6+0.5,40])cylinder(r=2,h=50, $fn=8); // socket right hole cutout
+        translate([48-4.5+37-0.5,3+15.6+0.5,40])cylinder(r=2,h=50, $fn=8); // socket left hole cutout
+        translate([1,6,44])cube([12.5,20,30]); // switch cutout
+    }
+
+
+    translate([7-0.5-0.5,40-1+15+0.7,-10])cylinder(r=2,h=50,$fn=15); //  left back mounthole cutout
+    translate([7-0.5-0.5,40-1+15+0.7,-3.7])cylinder(r2=2, r1=3.5,h=1.5,$fn=15);
+
+    translate([67.5-0.7-0.5,43.5-1+15+0.5,-10])cylinder(r=2,h=50,$fn=15); //  right back mounthole cutout
+    translate([67.5-0.7-0.5,43.5-1+15+0.5,-3.7])cylinder(r2=2, r1=3.5,h=1.5,$fn=15);
+
+
+    translate([130,32+26,55-4-25])rotate([0,-90,0])cylinder(r=2.5,h=50,$fn=35); // Left side bracket screw hole
+    translate([101.1,32+26,55-4-25])rotate([0,-90,0])cylinder(r2=2.5, r1=4.1,h=3,$fn=15);
+    translate([-0.3,1,-1.2]) CubeAdjust(102,54.25);
+
+    for(i=[0:9])
+        {
+        translate([20+i,6.8,-10])cylinder(r=3.5,h=50); //  left back mounthole cutout
+        }
+
+
+
+}
+}
+
+module PSU_Y_REINFORCEMENT()
+{
+difference()
+{
+    union()     // base shape
+        {
+            translate([ 59.5, 0, -18 ]) cube([ 33, 6, 19 ]);  // reinforcement plate
+            translate([ 73.5, 5, -18 ]) cube([ 5, 16, 19 ]);  // vertical_reinforcement    
+        }
+    union ()    // cutouts
+        {
+            
+                      
+            translate([ 87.5, -8, -20 ]) rotate([ 0, 45, 0 ]) cube([ 10, 20, 10 ]);  //corner cut
+            translate([ 52.5, -8, -20 ]) rotate([ 0, 45, 0 ]) cube([ 10, 20, 10 ]);  //corner cut
+            translate([ 68.5, 20, -34 ]) rotate([ 45, 0, 0 ]) cube([ 15, 23, 20 ]);  //vertical reinf cutout
+            translate([ 66.2, -0.2, -5])cube([23.6, 0.4, 5.6]);
+            translate([ 68 + 1.8 +2.6, -0.2, -7.7 -5.6])cube([11.2, 0.4, 5.6]);
+            
+            
+            translate([ 88, 8, -11.5 ]) rotate([ 90, 0, 0]) cylinder( h = 10, r = 1.8, $fn=30 );  //hole A
+            translate([ 68, 8, -11.5 ]) rotate([ 90, 0, 0 ]) cylinder( h = 10, r = 1.8, $fn=30 );  //hole B
+            
+            translate([ 88, 8, -9.5 ]) rotate([ 90, 0, 0]) cylinder( h = 10, r = 1.8, $fn=30 );  //hole A
+            translate([ 68, 8, -9.5 ]) rotate([ 90, 0, 0 ]) cylinder( h = 10, r = 1.8, $fn=30 );  //hole B
+            
+            translate([ 86.2, -10, -11.5 ]) cube([ 3.6, 20, 2 ]);  // hole cut extension
+            translate([ 66.2, -10, -11.5 ]) cube([ 3.6, 20, 2 ]);  // hole cut extension
+            
+            
+            
+        }
+}
+}
+
+
+module psu_main(){
+    
+    
+difference()
+    {    
+        union()
+        {
+            PSU_COVER();
+            PSU_Y_REINFORCEMENT();
+            translate([85.5,4+15.6+0.5,39.1+13.5]) rotate([0,0,180]) nuttrap();
+            translate([49,4+15.6+0.5,39+13.5]) rotate([0,0,180]) nuttrap();
+        }   
+        translate([-5,-9,-30]) cube([150,10,100]);
+    }       
+}
+
+
+
+module upper_part()
+{
+    difference()
+    {
+        union()
+        {
+        psu_main();
+        translate([30,3.5,49.5]) cube([15,11,2.5]);
+        translate([45,3.5,1]) cube([15,11,2.5]);
+            
+        }
+        
+        translate([-5,0,-20]) cube([120,3.5,120]);
+        translate([37,9,39]) rotate([0,0,0]) m3_screw();
+        translate([14.5,8,25]) rotate([0,-90,0]) m3_screw();
+        translate([85.5,8,25]) rotate([0,90,0]) m3_screw();
+        translate([52,9,14.5]) rotate([0,180,0]) m3_screw();
+        
+        //version
+        translate([73,7.5,1.5]) rotate([0,0,0]) linear_extrude(height = 0.6) 
+        { text("R1",font = "helvetica:style=Bold", size=6, center=true); }   
+    }
+
+
+
+
+
+}
+
+
+module lower_part()
+{
+    difference()
+    {
+        union()
+        {
+            difference()
+                {   
+                union()
+                    {
+                    psu_main(); // base cover
+                    translate([50,0.5,40]) cube([40,3,13.8]);
+                    translate([5,0.5,4]) cube([90,4,45]);                
+                
+                    }
+                    translate([-5,3.5,-20]) cube([120,100,120]);  // cut 
+                }
+            
+            // frame side wall
+            translate([3.1,3,5]) cube([3,10,40]);
+            translate([5.1,3,20]) cube([3,10,10]);
+            
+            // rear wall
+            translate([93.9,3,5]) cube([3,10,40]);
+            translate([91.1,3,20]) cube([3,10,10]);
+            
+            // switch side wall
+            translate([30,3,44.5]) cube([15,11,5]);
+
+            // nut inserts
+            translate([32,1,44]) cube([10,1,5]);
+            translate([3,1,20]) cube([5,11,10]);
+            translate([92,1,20]) cube([5,11,10]);
+            translate([45,2,3.5]) cube([15,11,5]);
+            translate([46.5,1,3.5]) cube([10,2,5]);
+            
+            // floor reinforcement
+            difference()
+                {
+                    translate([5,0.5,4]) cube([90,3.5,45]);                
+                    translate([53.5,-1,34]) cube([27.5,8,20]);
+                }
+
+        }
+
+    // rear side nut
+    translate([4.5,-3.4,22.2]) cube([2.3,15,5.6]);
+    translate([-4,8,25 ]) rotate([0,90,0]) cylinder(h=15,r=1.6, $fn=30 ); 
+    translate([-2,8,25 ]) rotate([0,90,0]) cylinder(h=4,r=3.1, $fn=30 ); 
+    
+    // frame side nut
+    translate([93,-3.4,22.2]) cube([2.3,15,5.6]);
+    translate([88,8,25 ]) rotate([0,90,0]) cylinder(h=15,r=1.6, $fn=30 ); 
+    translate([98,8,25 ]) rotate([0,90,0]) cylinder(h=4,r=3.1, $fn=30 );
+
+    // edges
+    translate([0,15,38]) rotate([45,0,0]) cube([15,15,15]);
+    translate([90,15,38]) rotate([45,0,0]) cube([15,15,15]);
+    translate([0,15,-9]) rotate([45,0,0]) cube([15,15,15]);
+    translate([90,15,-9]) rotate([45,0,0]) cube([15,15,15]);
+    translate([25,6,38]) rotate([0,0,45]) cube([15,15,15]);
+    translate([49.5,6,38]) rotate([0,0,45]) cube([15,15,15]);
+    translate([41,6,3]) rotate([0,0,45]) cube([15,15,15]);
+    translate([64,6,3]) rotate([0,0,45]) cube([15,15,15]);
+
+    // switch side nut
+    translate([31.5+2.8,0,47.5-2]) cube([5.6,9+2.8,2.3]);
+    translate([37,9,43 ]) rotate([0,0,90]) cylinder(h=15,r=1.6, $fn=30 ); 
+    
+    // reinforcement side nut
+    translate([52,9,-5 ]) rotate([0,0,90]) cylinder(h=15,r=1.6, $fn=30 ); 
+    translate([46+2.8,0,5]) cube([5.6,9+2.8,2.3]);
+    
+    // cleanup
+    translate([-5,-8,-20]) cube([120,10,120]);
+    
+    // nut edges
+    translate([46+2.8,1.5,4]) rotate([45,0,0]) cube([5.6,3,3]);
+    translate([31.5+2.8,1.5,44.5]) rotate([45,0,0]) cube([5.6,3,3]);
+    translate([5.5,-0.5,22.2]) rotate([0,0,45]) cube([3,3,5.6]);
+    translate([94,-0.5,22.2]) rotate([0,0,45]) cube([3,3,5.6]);
+    
+    
+    //version
+    translate([10,3.6,20]) rotate([90,-90,180]) linear_extrude(height = 0.8) 
+    { text("R1",font = "helvetica:style=Bold", size=6, center=true); }    
+    }
+
+
+    
+    
+}
+
+
+translate([0,0,-3.5]) rotate([90,0,0]) upper_part();
+translate([100,23,-2]) rotate([90,0,180]) lower_part();
+
+
+
+
+
+
+
+
+